Twin strainer



TW|N STEM-NER- APPLICATION FILED MAR. 13, I919.

Patented Sept. 5, 1922.

3 SHEETS-SHEET l- INVENTOR I "1 2 1! Brazui AfTORNEYS C- F. BRAUN.

' TWIN STRA|NER.-

APPLICATION FILED MAR 13, I9I9.

Pafiented Sept. 5, 1922.

3 SHEETS SHEET 1.

g INVENTOR flaw! l imam ATTORNEYS C. F. BRAUN.

TWIN STRAINER.

APPLICATION FILED MAR. 13, 1919.

' PatentedSept. 5, 1922.

3 SHEETS-SHEET 3 INVENTOR flarl Bruewa M ATTORNEYS Patented Sept. 5, 1922.

' narrate mm 1 CARL F. BRAUN, or snn'rnnncrsooi' oALiFonNIA.

I 1,428,270 rarsnr;orr

ITWIN fs'rRAiNER.

Application filed March .13, 919. serial no. 282,259.

To all whom it may comm:

Be it known that I, CARL F; BRAUN, a

citizen of the United States, residing at San strainer, dated January 15, 1918, hearing the Number 1,253,344. I

The present invention is particularly concerned with means for providing a simplified by-pass for controlling separate manlfolds and diverting the liquid therefrom through separate strainer units with a minimum amount of friction,said units being housed in a compact case within which the control valve mechanism is mounted and which further insures that the strainers or the valves may be readily removed when desired. I I *The present invention comprises a pair of parallel strainer unit's, between which a passageway is formed, with which passageway communication may be established from either or'both of the units by means of valves operatin transversely to the longitudinal axis of t e strainer units, the passageways and ports being straight and affording direct communication. 4 i

The invention is illustrated by way of example in the accompanying drawings, in.

which *Fig. 1 is a view inside elevation with parts broken away to clearly disclose the relative disposition of the strainers to the controlvalves.

Fig.2 is a View in horizontal section through the device, as seen on theline 2-2 of Fig. 1. I Fig. 3 is a view in vertical section througl the device, as seen on theline 3-3 of Fig.

Referringmore particularly to the drawings, 10 inc icates a housing formed on one side with a bolting flange 11. ThlS flange surrounds an intake port 12, which port communicates with a cylindrical valve'chamber 13. The central axis of the valve chamber 13 extends horizontally and agrees with stem 143 This stem passes through an annular valve seat 15, which is mounted on one side of the chamber 13' and thereafter 'm'ent therewith.

' edflupon the stem 14am extends intoabearing 16' mounted outside of the chamber 13, as particularly shown in Fig. 2. ,Opposite thevalve sea-15 ineham" ber 13', is formed another annular'valv'e seat 17 ,"agreeing with: theseat'15 and in align A double-face valve member 18 is mount} by rotation of" the ice.

stem, maybe causedto alternately register with eitherfon'e of the seats15 or 17. I The central openingthrough the seat 15 communicates with an upper passageway 19 and the opening through the seat 17 communicateswith an upper passageway 20'. The upperlpassageway 19 is in communication" with a cylindrical "strainer housing 21 while the passageway 20 is in communication with a'c'ylindricalstrainer housing 22. The longitudinal axes of these housings" are parallel with each other, and at right angles to the axis of the valve stem 14:. I

Between t-he'strainer cylinders '21 and 22 is an outlet passageway 23 provided with a 1 suitable bolting flange 24by which it may be connected .to any desired piping. Referring to'Fig. 3, it will' be per passageway 19 surrounding the valve stem 14, does not connect directly with the outlet passageway 23 but as shown in Fig. 2, constantly communicates with the strainer cylinder 21while the passageway 20 con stantly' communicates with the cylinder 22.

I so noted that the u Communication between these two cylinders with the outlet passageway 23 is controlled by a double'valvemembe'r 24E mounted upon a valvestem 25.' Thisstem is parallel tov the valve stem 14 of the valve l8and opcrates across the endof the outlet passage way23. This passageway, as shown-in Fig. 1,"is in thesame vertical plane with them .let passagewayf13 although not indirect communication therewith. The walls of the valveseats 26 and 27 respectively, against ,WhlCh' thG valve member '24 may alternately register. The fioWppening' through the valve seat 26 establishes communication be cylinder 22and the outlet passagewayrd II It will thus'be' observed 'that movement" outlet passageway 23 I arev provided with between acorresponding end of the strainer the longitudinal center of an upper valve of the valve member 18 will act to direct) the inflow of liquidto either of the strainer cylinders 21 or 22 and the movement of the valve member 2% will act to control the outflow of liquid from these two cylinders. The valve mechanism may be of any conventional design but is here shown ascomprising a cross-head 28 carried upon bolts 29, the cross-head being threaded to receive the outer threaded end of the valve stem, A hand wheel 30 is mounted upon the outer end of each; stem and thus, when the hand wheel is rotated, the corresponding stem may be reciprocated through the cross-head and the valve carried thereby moved as'desired, The cross-head and its supporting members are mounted upon end caps 31 whichseal the upper ends of the valve chambers and which may be taken off by the removal of capfscrews 32, thus making it possible to readily repair the valves when desired. In

this connection it is also to be. noted that the various valve seats are threaded into. position and may be easily removed or replaced.

The strainer cylinders 21. and 22 are fitted with removable heads 33, particularly shown in Big, 3. These heads are pivotally and centrally mounted upon swinging cross-arms.

34, the cross-arms being pivoted by bolts to brackets The free ends of the cross-arms are adapted to be locked in place by eye-bolts 37 carrying lock-nuts 3,8. It will thus be seen that the members. 33 may; be

screen is providedjwith a head 42 carrying a centering pin L3. This pinextends into a centering boss 4L4. One of these members is formed in the bed end; of each of the cylinders 21v and 22 and concentric therewith. The screens are held in'position by means of triangular-shaped springs 455 which are carriedjupon the end flange, ll ofieach screen and are adaptedto be pressed against. by the cover members 330i the cyl},

inders, thus holding the screens in position and permittingthemfto-be easily removed when I requ red.

In operation of the present invention, a

fluid is admitted to the housing 10 through the intake port 12. It then passes intothe chamber 13. I fthe valve member 18stands mi lway between the valve seatslfi and 17, e-f will thus circulate through the passageways readily removed and, access gained tothe cylinders 21 and 22. Mounted within eachf of these cylinders, is a cylindrical,

fluid will; flow, in both directionsand 19 and 20, entering the upper ends of each of the screen cylinders. It will then pass through the wall of the screen and if the valve member 24 is standing away from its valve seats 26 and 27', the fluid will flow into the outlet passageway 23 and then to the connections with which the bolting flange 24 is secured. It will be evident thatby moving the valve member 18 to cause it to register with either of its seats 15 or 17, the fluid may be diverted from either of the passageways 19 or 20 to the opposite passageway and the-entire volume of fluid caused to circulate through one cylinder 21 or 22 and the screen element therein. By closing the corresponding valve opening of the valve member 24, one of the screens may be completely eliminated, if desired, for the purpose of repairs or other reasons.

It will thus be seen that the device here disclosed is. embodied within. a very compactly designed structure which permits direct operation of the valves and, selective operation. of the screening elements, at the same time insuringv that. the valves and screening elements may be separately removed and repaired without discontinuance of the operation of thestmicture.

While I have shown the preferred form of my invention, it will be understood that various changes in the combination, con,- struction and arran ement of parts may: be

by those s led in the art, without departing from the spirit of the invention. as claimed,

Having thus described my invention, what I claim and desire to, secure by Letters Patentise- 1-. In, a twin strainer, a pair of vertical screen housings, a pair of horizontal and. superimposed valve housings formed on one side of the screen housings, eachvalve housing having a pair of passages extending therefrom, a passage of the upper valve housing communicating with the upper end of, each ,v screen housing-and a passage of the, lower valve housing communicating with. the lowen end of each screen housing, a screen member in each of said screen lions; ings, an inlet connection for one of the valve housings and, an outlet, connection, for the other valve housing, and a valve in each valve housing whereby the passagesof each housing. leading to the screen housings may be alternately closedoropened.

2. In, a, twin strainer, a pair, of vertical screen housings, a pair. of horizontal and, superimposed valve housings formed onone side ofthe screen housings, eaclrvalve housing having, a pair of passages extending therefrom, a' passage of the upper valve; housingicommunicating with the upper end lower valve housing communicating with the lower'end of each screen housing, a screen member in each of said screen housings, an inlet connection for one of the valve housings and an outlet connection for the other valve housing, said outlet being disposed on one side of the screen housings, opposite to that upon which the valve housings are formed and the inlet being formed in the valve housing with which it communicates, and both inlet and outlet being further disposed in substantially the same horizontal plane.

3. In a twin strainer, a pair of vertical screen housings, a pair of horizontal and superimposed valve housings formed on one side of the screen housings, each valve housing having a pair of passages extending therefrom, a passage of the upper valve housing communicating with the upper end of each screen housing and a passage of the lower valve housing communicating with the lower end of each screen housing, a screen member in each of said screen housings, an inlet connection for one of the valve housings and an outlet connection for the other valve housing, said outlet connection being disposed on the side of the screen housing opposite to the side upon which-the valve housings are formed and communicating with its valve housing through a passageway formed between the screen housings, and said inlet connection being formed in the valve housing with which it communicates.

l. In a twin strainer, a pair of vertical cylindrical screen housings, a hinged top for each screen housing, a pair of valve housings formed on one side of the screen housings and at right angles thereto, one valve communicating with the upper portion of each screen housing and the other valve communicating with the lower portion of each screen housing, an outlet connection for one of the valve housings and an inlet connection for the other valve housing, a valve in each valve housing by which the passages of each valve communicating with the screen housings may be alternately closed or opened, a cylindrical screen in each screen housing of less diameter than the inside diameter of the screen housings, an upwardly bowed spring member having its opposite ends secured to the opposing sides of each screen member, andits bow. portion adapted to engage the top of the screen housing when closed, and means for exerting downward pressure and locking the top of the screen housings whereby the screens are held in a vertical position.

5. In a twin strainer, a pair of vertical cylindrical screen housings, a pair of superimposed valve compartments formed on the sides thereofeach of said compartments having two passages, each passage of the upper compartment communicating with an upper portion of the screen housings and each passage of the lower valve compartments communicating with a lower portion of the screen housings, a cylindrical screen in each of said screen housings of less diameter than the inside diameter of the housings,'a central boss in the bottom of the screen housings to hold the screens in spaced relation to the screen housing bottom, a bail on the upper end of each screen adapted to cooperate with the top of said screen housings to hold the screens in a vertical position, an inlet connection for one of said valve compartments, an outlet connection for the other compartment, and a valve for each compartment, whereby the passages thereof communicating-with the screen housings may be alternately opened or closed.

In testimony whereof I have hereunto set my hand in the presence of a subscribing witness.

CARL F. BRAUN.

lVitness: I

JOHN F. MILLER. 

